Elevator



Des. 22, 1925. 1,566,408

n C. C-i. LASSEN Dec. 22y 1925 1,566,408

c. G. L AssEN ELEVATOR Fil-ed Feb. 25, 1922 4 Sheets-Sheet 5 Dec'. z2, 1925. 1,566,408

C. G. LASSEN ELEVATOR me@ Febv 25, 1922 4 Sheets-Sheet 4 4 IN VEIV T05 gfnfl @mij WM A 7- Arron/J rs Patented Dec. 22, 1925.

CHRISTIAN e. LA ssEN,

oF NEW. Yoan, N. Y., AssrGNon To srIUR` Loc ELEVATOR SAFETY Co., Inc., or NEWKYogn-i, NKY., A connonarion or new YORK.

ELEVATOR.'

- Appiieation filed February es, i922.; semaine, ssa-525.,Y

To all whom t may concern: Y

Be it lrnown'that l', Crinis'riAN Gr.Y LAssnN,

a citizen ot'Germany (who has declared his intention to become a. citizen of theUnited States), residing at 219WVest l27th-Street, in the boroughv of lVlanhatt-an ofthe city o-i New York, in the State otNew York, have invented certain new and useful mprovements inllevators, of which the following is a Vspecilication, referencebeing had tothe accompanying drawings, forming a part hereo't.` L f rlhis invent-ion relates particularly to the operation'o'fth'e car doors and orP the shaft doors of elevatorsand has for its general object to'provide power actuated means for the` operation ot' such doors under' the controlotythe operator, whereby the doors shall operation oft the elevator than when the doors are opened and closed by tlie operator,

ating devices with the elevator controlling mechanism so as to guard against accidents.

ln the embodiinentrof the invention chosen' tor illustration and explanation of its nature, there is placed in the elevatorcar." in convenient proximity to the car controlling lever, a. door controlling handle bythe manipulation of which the car door and the shattdoor opposite which the car is stopped are coupled operatively with a source of* power, the sourceot power ii-or the operation of the doors being` preferably a power storage device in which power is stored by the movement of the cai' in the shaft- Such powen storage device may comprise most conveniently a weight which is carried with the carfbut' is movable with respect to the car, means being provided, whereby the weight is raised, with reference vto thecar, by the movement ot the car in either ldirection, is retained in its highest position until its action is required for the opening or the closing ot the door or doors and is released under the contiolrof the operator for the purpose ot' opening or of closing the doorv or doors as the casemayf'be. 1n the particu lar construction shown and described herein as a preferred embodiment of the invention, a cable, made 'tast at its upper vand lower ends et the top and the bottom of the ele- A"rater shatt, is passed? in an S-loop about beopeiiedand closed with less delay in the car.

:suitable guides 'carried bythe car, so'tliat whentlrevcari's 'mov-'ing downwards a weight inounte Ynovablyonthe carshall be raised,

with respect' to' the ear, it" connected'at that ntiine'to' vvone vmember of the S-loop of the "cable, andy shall' also be moved upward, with respect the car, ill connected to another member ofthe Sloop ot the cable, when'the Acai'-isiriovir1A upward. i As a matter oi'i'ffact any selected point in either of the two stanc.- ing` parts or Outer members of the looped 'cable hasfnovertical movement in space so that tiieweight, connected to one of such parts during the downward movement of Vthe car, is raised with respect to the car,

while any'ploint in the int rinediate portion ol the looped cable, that; is the portion between the two guides on the car, has an 'upn ward 'movement in space at aspced twice that oit the upwardlyA moving car, so that it the we'ght is connected vto such intermediate pord i of the cable when the car is moving d the weight will be raised*V with respect to the car. When the weight. stands in itshighest position withrespect to the car it is released from the power storing or weight lifting cable and lthereafter continues to Vmove with the car until the stored Apower or weioht'isito be applied to the door Vlor doors, being held in its power storing or elevated position by devices carried'by the hen, however, movement is to be imparted to thev 'door or doors, the power storingf device or lweight is ,releasedl from the holding means and, being at that time tree from the'-power-storing,` or lifting cable, falls in space andv with respect to the car, which is .then stationary, and, being-then operatively connectedwith the door or doors, opens 0r closes the saine may be required. The invention is concernedy mainly with the means foreliecting` the several opera- PLS tions jnst'reterred to, but is concerned also with the device whereby each shaft door, oppositefwliich the 'car is brought to r.est,'is opened or closed Vwith the car door. vThe invention will be explained more fully hereinafteriwith reiferenceto the accompanying kdrawings in rwhich itis.v illustrated and in which I Figure l is" a view in elevation, brolien out to save space, of'y an elevator cark which is equipped with devices adapted for the practice ot the invention,

Figure 2 is a partial view of the same in elevation as seen from the left hand in Figure 1.

Figures 3. 4 and 5 are detail views, on a large scale, illustrating particularly certain interlocking connections to prevent movement of the car when the doors are in any other than the closed position.

Figures G, 7 and 8 are detail views on a still larger scale illustrating particularly the power storage device or weight and the means for coupling and uncoupling the same to and from the fixed power storing cable, the holding means and the power transmitting means, Figure 7 being a view in section on the plane indicated by the broken line 7 7 of Figure 6 and Figure 8 being a top viewof the parts shown in Figure 6.

Figures 9, 10 and 11 are detail views illustrating particularly the devices for effecting operative engagement between the .shaft door and the door operating device, Figure 10 being a view in vertical section on the plane indicated by the broken line 10-10 of Figure 9, and Figure 11 being a view in horizontal section on the plane indicated by the broken line 11-11 of Figure 9.

Figures 12, 13 and 14 are diagrammatic views which illustrate respectively the positions of the several clutch controlling cams when the door controlling handle is in neutral position, is in position for opening the doors, and is in position for closing the doors.

1n the drawings, Figures 1 and 2, there is shown at Z a portion of the frame of an ordinary elevator car, the floor of which is indicated at a. The car may be raised and lowered in the elevator shaft by any suitable means. lt may have a door, indicated at a?, and may be provided with a controller box a3 having a controller handle CL4 and with an interlocking rod a5 which operates in the usual manner to prevent the movement of the controller handle to start the car when the car door or the shaft door, as hereinafter described, is not in closed position. At each shaft landing there is a door of any desired construction, indicated in part at Z) in Figure 9.

A cable c, referred to herein as the power cable or lifting cable, is lined at its. upper and lower ends at the top and bottom of the elevator shaft and is' passed in an S- loop over guide pulleys c, c2 and c3 which are`mountcd on the car, one of the members as c4 of the loop serving to effect, as hereinafter described, a movement of the power storagedevice or weight in one direction with relation to the car during the downward movement of the car and the other member of the loop, as c5, serving to effect a relative movement of the power storage device orv weight in the same direction with respect to the car when the car is moving upward. In this manner the i movement of the elevator car in the shaft is made to store power for the operation of the car door and of the shaft doors, whether the car be moving up or down.

The power storage device may be of any suitable character, but is preferably a weight (Z, which may be made up of the required number of sections, arranged to slide vertically with respect to the car on suitable vertical guides cto. In a suitable frame cZ to which the power storage device or weight (Z is secured are arranged clutch devices or coupling devices adapted to effect engagement of the power storage device or weight, at the will of the car operator, with the power storage cable c hereinbefore referred to, with holding rods c which at their upper and lower ends are secured to the car, and with the members of the looped transmitting cable The weight eZ and the frame CZ are suitably channeled to receive the power storage cable, the holding rods and the members of the looped transmission cable.

Flach clutch or coupling device, marked respectively g', g2, g3, g4, g5 and 96, in the construction shown, comprises a yoke g7 arranged to move vertically in the frame CZ and provided with a vertical guide stem g8, and a clutch roller gg, the shaft glo of which is received in inclined slots g of the yoke gl. The frame CZ is formed interiorly with a cam surface (Z2, so that when the yoke gl moves upwardly in the frame the cam surface Z2 co-operates with the roller gf to force the same toward the plate Z3 of the frame Z and thereby to clamp the corresponding cable or rod between the roller and the frame and so clutch or couple the power storage device or weight to the corresponding cable or rod. Zhen the yoke Q7 moves down within the frame CZ the roller gf) is permitted to move away from the plate Z3 of the frame and the power storage device or weight is thereby disconnected from the corresponding cable or rod. Each yoke g7 is lifted into operative position by a spring g1g, to effect the clamping action described, and is depressed, in order to release the rod or cable, by devices about to be described.

In pedestals Z4 erected on the frame Z and therefore carried with weight CZ, is mounted for rotation a cam shaft Zi. which is armed with cams 71,', Zz?, 7a3, h4, h5, and h6 for cooperation respectively with the clutch member g', g2, g3, g4, g5 and g, each cam acting through al roller ZtT and a slotted presser ZLS which is connected through an adjusting screw hg with the vertical guide stem g8 of the corresponding clutch yoke 97, the spring gm, which lifts the yoke, being interposed between the top of the frame rZ and the foot of the presser hs. The cam shaft is oscillated rijsegds in one direction orY the other to effect the disweight and with the car, and has a key k12V which engages a keyway 7h13 formed in a vertical shaft 71,14. The latter is mounted, at its upper and lower ends, in suitable bearings carried by the car, and at its upper end is connected by suitable linkage, 7&5, with an operating shaft i-l which is provided with an operating handle ,72,17 in convenient proximity to t-hecontroller handle at.

In the arrangement of the clutches and cams shown, the clutches g and ge co-operate respectively withthe holding rods e or their equivalents, of, which two are preferably provided, although each one serves the necessary purpose. The clutches g2 and g5 cooperate respectively with the 'members c5 and c4 of the looped, power storage or weight lifting cable c, while the clutches g3 and g4 co-operate respectively with the members f and f2 of the looped transmission cable f to be referred to hereinafter.

In order that the power storage or weight lifting ,cable may be disconnected from the power storage device or weight when the required power has been fully stored, that is, when the Weight has reached its highest p0- sition with respect to the car, without requiring any action onpthe part of the operator, each of the pressures'lis, g2 and g5, is provided with anI upward extension h5X so that, as the weight approachesv its highest position with respect to the car, such extensions shall contact with a bar i supported yieldingly near the top of the car by rods t" preferably provided each with a resistance spring 2 and a dashpot 3, and shall be depressed thereby (witli'respect to the cam shaft and clutches), and so release t-he power storage or lifting cable from the weight, which is held in its elevated position by the automatic engagement of the clutches g. and g with the holding rods e. It will be understood that as the lifting of the weight to its highest position may be accomplished either during upward movementof the car or during downward movement of the car, the automatic disengagement of the weight, when itreaches its highest posit-ion, must be effected Afrom whichever member of the looped cab-le may be in engagementwith the.l

weight at the time, and that both clutches g2 and g5 must therefore be open. c

The transmitting cable f is looped at its lower end around a driving pulley f3, supported below the door a of the car and to be referred to again hereinafter, while the two portions f and f2 of the cable,'being passed over guide pulleys or idlers f* near the top of the clutches of the car, are wound in opposite directions about and are secured to a drum 7c which is mounted in suitable V.bearings on the car` near itst-op. On the shaft ofthe drum 7c isv fixed a sprocket .wheel 7a and mounted on suitable bearings at the other side of the car is an idler sprocket wheel L2. The two ends of `a. `chain le?, which is passed about the sprocket wheels 7c and 7a2, are connected `to a traveller 7c? which is mounted iny suitable guides 755 to move horizontally across the car and is connected, as by an arm 706, with the car door a2. It will now be seen that whenl Vthe weight (l is disconnected from the holdingiods e and descends, with respect to the car, and is coupled through one or the other of the clutches (73, g4, with one member or the other of the looped transmission cable f, through movement of the cam shaft h atl the will of the operator, the traveller 'ist will be moved-in one direction or the other across the car through the expenditure of the energy which had been stored in the powei storage device or weight, and that the car door a2 will be moved to openy or to closed position as the case may be, such movement being continued until the traveller is brought torest by the stops which limi-t its movement or until the operator moves the handle 71,17 to neutral position and thereby uncouples the weight from the transmission cable and permits it to be engaged with the holding rods or with the power storage cable as the case may be.

The pulley f3, above mentioned, is rotated in one direction or the other by the movement of the transmission cable f and this movement, whenthe car door is Ybeing o'pened, is made use of to lock the car controller through movement of the usual locking rodA a5. As shown the pulley f3 is fixed on a shaft which is mounted in suitable bearings below the Hoor of the car andk is armed with a screw thread as at im. The threaded portion f6 of the shaft is engaged by a traveling nut f7 which carries an ai'ni fs. The free end of the lat-ter when moved by an opening of the door, contacts with one arm of a bell crank lever fs, which hasa `upper end, engages one arm of a threearmed lever a7, which is connected with the slotted lower end of the. locking rod a". Movement of the nut f7, when the car door is being opened, will therefore cause the locking rod a5 to be moved into locking position, so that the controller handle a4 is locked against the movement to start the car when the car door has been started from its closed position. Y

As a further safety locking device, to prevent the kmovement of the controller to starting position when the door is being moved in either direction, the shaft 7L, which is moved from its neutral position in one direction or the other by the movement of the door controlling handle 7L, is provided near its lower end with a transverse pin 7am, the ends of which are engaged by the two slotted members of a forked link as, which is connected with the vertical arm of the threearmed lever al, so that any movement of the shaft 7N in either direction from its neutral position, for the purpose of bringing about movement of the car door will effect the movement of the locking rod a to position to prevent starting movement of the car controlling handle a4. The slotting of the lower end of the locking rod 0,5, of the upper end of the link f, and of the two members of the forked link as, permits movement of the locking rod a5 under the influence of either of the safety devices just described or in the operation of the usual emergency release indicated at a9 in Fig. l.

The movement of the car door c2 is made to effect corresponding movement of the shaft door opposite. which the car is brought to rest. This has been accomplished heretofore by providing upon the car door er upon thetraveller by which 1t is moved, a pair of fixed, vertical shoes, spaced apart and adapted to receive between them a stud lined to or connected to the shaft door so that movement of the car door shall effect movement of the shaft door. lt has been found in practice that the xed shoes require careful adjustment and even then are a source r of trouble through unintended Contact with portions of the elevator shaft or its equipment during the movement of the car. In the present case the shoes which move with the car door and effect the movement of the shaft door, are movably mounted so that they may stand normally out of operative position and therefore out of position for unintended contact with parts of the elevator shaft and its equipment and may be moved into operative position only when the car operator moves the door controlling handle 71,17 to bring about the opening or the closing of the door. ln the arrangement shown two shoes m, suitably shaped, as shown in Figures l, 9, 10 and 1l, are pivotally hung, as at m, so as to swing upon vertical axes, from the inoperative position indicated by broken lines in Figure ll to the operative position indicated by full lines in the same ligure, the two shoes being spaced apart, when in operative position, so as to receive between them the coacting device on the shaft door. The arms m2, both upper and lower, which carry the vert-ical portions of the shoes m are provided with intermeshing gears m3, so that. the two shoes shall move together but in opposite directions. The arms are also provided with contacting faces m4 for co-operation with an actuating member m5 which is secured to a vertical shaft m supported in suit-able bearings carried by the guide rails and located in line with the middle of the space between the shoes m when the car door is closed. nected with the operating shaft 7&1, so that the actuators m5 shall be swung from their normal or neutral position, indicated by the broken line in Figure 1l, to one side or the other, as indicated by full lines in Figure 11, when the door controlling handle 71.1T is moved to one side or the other from its neutral position. In the arrangement illustrated arms m7 secured to the shaft mj carry a rod m8 which is connected by a link 7729 to an arm m10 at the upper end of the shaft 79* which, as already described, is operatively connected with the shaft 7am and is moved therewith. rlhe shoes m, when free to be moved from operative position, are drawn by springs, as indicated at m11 in Figure 1l, mto inoperative position. By the movement of the actuator m5 the shoes m, through contact of the actuator with the contact surfaces m4, are moved from inoperative to operative position, the door being fully1 closed when this action takes place. As soon, however, as the movement of the door from closed position begins and before the contact surface m4 at one side is free from the actuator m, the contact surface m4 co-aets with a holding rail m12 which extends across the car nearly to the position occupied by the actuator m5, so that, during the continued movement of the door and carriage 7c", the shoes m are held in operative position.

Fixed to the shaft door 7) is a bracket on which is pivoted a bell crank lever 722, one arm, 723, of which is formed as a pawl t-o engage a short rack b4 fixed to the hatchway or front of the elevator shaft. Also pivoted on the bracket 7) is a dog b5 which cooperates with a pin 796 carried by the bell crank lever b2. rlhe unbalanced weight of the bell crank lever b2 serves to hold the pawl 723 normally in engagement with the rack 724 to lock the shaft door against movement from its closed position. l rlhe upper ends of the bell crank lever b2 and the dog 725 are enlarged to co-operate with the shoes m. llhen, therefore, the car is stopped in position opposite a shaft door, the operator, by manipulation of the door controlling handle 7117, not only eHects the release of the power storage device and the operative connection of the same with the car door, but at the same time causes the shoes m to swing ,into operative position and thereby to disengage the latch 3 and release the shaft door for movement with the car door through the traveller 704.

For the purpose of cushioning the movement of the doors the traveller 7c4 is provided with an arm S which moves between two stops 759 on a horizontal rod cw which The snaft m6 is operatively conlll() llO is provided at each end with a dashpot la, As the traveller inolves in either .direc-tion its movement is free .until` the arm c-S .contacts with one or .the other or' .the stops le and thereafter 4the rol 'klo moves vwith the vcontrollerhand-le h1? ils in ,neutralpositiem or i-n lposition :for opening the dooryor in position for closing the door, the vsevera-l cams, in their relation to the roller IL" of the corresponding lfitter,a-re showndiagramf matically in Figures 12, 13 and 1li. vlfVhen the door controlling khandle Vis in neutral rposition theholding. ams h ,and h6, which are alikev in ,shape and vin positionon the shaft, stand with'their v`*low parte in line with. the rollersl 7N, thereby permitting the clutches g and gG-toengage the holdingrods'e, e, so as tov retain the weight in its 4relatively elevated position; at the same time -thelpower storing cams an-d ft5, also alike in shape and in position onthe shaitt` stand with their 'low points inline withthe corresponding Vrollers h?, so that the power storing clutches g2 4andg5 shall-be in position to engage the parts ctand yc5 ofthe looped power storing cable, according to the direction/ot movement .of the caryatthe same time the door opening cam h3 stands vwith its h-igh point, at one. side olf-its low point, in contact :with the corresponding roller k7, thereby holding open the ontch g3 and .the door clos` ingeem zstands with its high point, at the other 1 side of its llow .poi-nt, .in contact with the corresponding roller-li?, thereby holding openv the door closing clutch. By the movement of thedoor `cont-rolling handle It in one direction to repen the `door or in the other direction to close the door, the `several cams assume the positions shown Vin Figures 13 and '14 respectively. It wilflbe notedr that the angular extent of one-halt of fthe `low part of each cam and theyangnlar extent of the rise ofeaehfcamxare so proportioned (-being substantially equa-l)` Athat the closing Clutchl orthe opening clutch, as the case may be, shall take hold ci. the corresponding member -otfthe -trfansmi L'ii-ng cable before the holding clutches fl-et go as otherwise `.the weight or power storing device would bereleased too' soon. Itl will be notedfurther that whenever any clutch is free fromtheaction of its corresponding ca1nan-y downward inovei'nent off the weight` and ith-eretofrer or" the clutch will tenth: throught-he cofoperationv of the cam snr-tace Z2 n/'ith tee correspon/ding` clutch roll-er g, tofcause'athe cflutch-aol-ler-t'o und .upon the.cerrespondingrod or cable member astlne case maybe and also thatboth the power Asteringclutches will .be openfd automatically when ythe weight reaches its highpoirrt with `respect tothe car. 1t will also be noted that as -any point ,in the standing part/c4 of the power ystoring cable has nomevenient in space, duringthe movement o 'f the ear,-the power storing weight will `be raised with respect to the .car if it is coupled to the member yc vduring the downward movement .of the car and that as any point in :the intermediate portion c5 .of the power storing cable, between the guides c and c2, has,'duri-ngV the upward .movement of the car, anfupwerdjmovement in Ispace at ay speed twice that of the car, Vthe power storing weight, it coupled to the member c5 of the Gable during theupward movement of the car will beraised with respect to the car.

. Reference has been made herein to the usual emergency release indicated .at e in Figure v1. In elevator practice this is` providedqinorder that in lan emergency, as in case of fire, the car can befmoved notwithstanding the fact that the carvdoor and the shaft doors are open. Solong `as'the holdprevent the shoes m from being moved to inoperative position except when the 'door controlling handle is moved by the operator. It will therefore be understood that the hold-y ing rrail m12 is not intended to be fined per-- manently in vposition but vis so supported that it may-be moved vout of position it con ditions require, as by levers indicated at m13.

It will be understood that various changes details .of constructionand arrangement can be made to suit different conditions et use ,-andthat, except as Lpointed out in the accompanying claims', the invention is not limited `,to .the particular construction shown and l,described herein nor tothe joint coaction of .all Vof the elements referred yto herein.

Iy claim as my invention:

1.'1'n an elevator, `the combination o-a car, adoor, a power storage device mounted en they-car, means whereby power is stored in said device through the ino-vement of the ear,l meansto hold Said device ,against-movef ment, and selective devices under the controlof theoperator whereby saiddeVice is connected `operatively with the power storingl means,.the.holding means land the door.

l2. an elevator, the combination of a car,-,aV door, a drum operatively --connected vwith the door, a looped cable having its ends .connected :to the .drum and wound thereon in yopposite directions,l a powery storage device -mountedon the car, and means -undercontrol ofthe operator to eiect operative connection of the power storage device to eithery memberof the looped cable.

3. In an elevator, thecombination of a car, a/door, awpowerfstorage device mounted on thercar .and adapted to lbe connected operatively with the door, a power lstorage v ing rail m12 isl in operative position it would cable having its ends fixed at the top and the bottom ot the elevator shaft, guides on the car for the cable whereby an S-loop is 'termed in the cable, and means whereby operative connection is el'l'ected between one member oit the fifa-loop and the power storage device during movement ot the car in one direction and between another member ot the S-loop and the power storage device and the movement ot the car in the other direction.

4e. In an elevator, the combination ot a car, a door, a power storage device mounted on the car and operatively connected with the door, a power ystorage cable lined atI its upper an-d lower ends at the top and bottom ot' the elevator' shaft, a clutch adapted to effect operative connection between the cable and the power storage device to store power in said device, and means under control ot the operator to determine the opening` or the closing ot said clutch.

5. In an elevator, the combination of a car, a door, a` power storage device mounted on the car and operatively connected. with the door, a power storage cable lined at its upper and lower ends at the top and bottom ot' the elevator shaft, a. clutch adapted to edect operative connection between the cable and the power storage device to store power in said device, a cani in operative relation with said clutch to determine the opening,` or the closing thereof, and a controller handle and operative connections to shift the cam.

6. ln an elevator, the combination ot a car, a door, a power storage device mounted on the car and operatively connected with the door, a power storage cable tired at its upper and lower ends at the top and bottom ot the elevator shaft, a. clutch adapted to etliect operative connection between the cable and the power storage device to store power in said device, a cam in operative relation with the clutch to determine the opening` or the closing thereof, a shaft on which said cam is mounted, a second shaft in operative relation with the first shaft, and a controller shalt in operative relation with said second shaft.

7. In an elevator, the combination ot a car, a door, a power storage device mounted on the car and operatively connected with the door, a power storage cable lined at its upper and lower ends at the top and bottom ot' the elevator shatt, a clutch adapted to effect operative connection between the cable and the power storage device to store power in said device, means under control of the operator to determine the opening or the closing Ot the clutch, and independent means to open the clutch automatically when power is 'fully stored in said device.

S. .ln an elevator, the combination ot a car, a door, a power storage device mounted on the car and operatively connected with the door, a power storage cable lined at its upper and lower ends at the top and bottom ot the elevator shaft, guides on the car whereby an S-loop is formed in the cable, clutches whereby operative connection is etecte'd between two members of the S-loop o1 the cable and the power storage device, cams to control said clutches, and mea-ns under control of the operator to shift the cams.

9. In an elevator, the combination ot a car, a door, a power storage device mounted on the car and operatively connected with the door, a power storage cable fixed at its upper and lower ends at the top and bottom ot the elevator shaft, guides on the car whereby an S-loop is formed in the cable, clutches whereby operative connection is etfected between two members of the S-loop oi the cable and the power storage device, cams to cont-rol said clutches, means under the control oit the operator to shittthe cams, and independent means to open the cams automatically when power is fully stored in said device.

l0. ln an elevator, the combination ot a car, door, a power storage device mounted on the car, a looped cable having its ends operatively connected with the door to eftect movement thereot in opposite directions, clutches adapted to etliect operative engage- 'inent between the two members ot the looped cable and the power storage device, cams in operative relation with the clutches respectively to determine the opening or closing thereof. and means under the control of the operator to shift the camsy ll. In an elevator, the combination of a car, a door, a power storage device mounted on the car and operatively connected with the door, a holding` rod mounted on the car, a. clutch to effect connection between the holdiim,I rod and the power storage de vice to prevent movement of said device. and means under control ot the operator to determine the opening` or the closing ot said clutch.

l2. In an elevator, the combination ot a car, a door, a power storage device mounted on the car and operatively connected with the door, a holding' rod mounted' on the ar, a clutch to effect connection between the holding; rod and the power storage device to prevent movement ot said device, a cam in operative relation with the clutch to detern'iine the opening; or the closing thereot, and means under control ot the operator to shift the cam.

13. In an elevator, the combination ot a car, a door, a power storage device mounted on the car, a power storage cable tinted at its upper and lower ends at the top and bottom ot the elevator shatt, a power transmitting; cable operatively*connected to the door` clutches to ellect operative connection between the power storage cable and the power .storage device yand between'the power storage `device, and the transmitting cable, and means' underthe control of the opera-tor to determinethe opening and thegclosing oi' such clutches. l

14. In an elevatorfthe combination o't a car, a door, a powcrstorage device mounted on the car, a power storage cable fixed at its Lipper and lower ends at the top and bottom ot'the elevator shaft, a power transmitting` cable Aoperatively connected 'to the door,rclutches to effect operative connection between the4 power storage cable and the power storage'device and between the power storage device and the transmitting cable, cams in operative relation with said clutches to detemine the opening and the closing thereof, and means under the control ol the operator4 to shift thecams.

io. VInan elevator, the combination of a car, a door, avpower storage device mounted on the car, ,apower storage cable fixed at its upper andv lower ends lat the top and bottom ofthe elevator shaft, a power trans- "1 m'itting cable operatively connected with the door, a 4holding rod mounted on the car, clutches to. eiect operative connection between thefpower storage, cablev and the power storage. device, andthe power storage devicer andthe power 'transmitting cable and the power storage device and the hold'ngrod and means under control of theoperator to determine ,the opening or the closing ot the clutches.

i6. In an elevator,jthe combination of a car, a door, a power storage device mounted on the car, a power'storage cable 'fixed at its upper and'lower ends atthe top and the bottom ofthe elevator shaft, a power trains- .mitting cable operatively connected wtihth'e door, a holding rod mounted on the car, clutches `toetfect operative connection between the'powerst'orage clable'andf the-power storage device, andthe power storage device and the `power transmitting cable and the power storage device andthe holding rod, cams in operative relation with the clutches to determine the Vopening or the closing thereof, and means under the control ot the operator to shift the cams.

17. In Van elevator, the combination of a cany a door, a single weight mounted movab'ly on the car, means to raise the weight with respect to the caryand'means vwhereby the movement of the weight in its descent elieets movementot the door in either direction at the will ot the operator.

18. In an elevator,'the combination of a car/,ra door, a single weight mounted movably on ,the"car, ay cable Xed at its upper and lower ends at ,the top and' kbottom of vthe elevator shaft, means to eliiect engagement between lsaid cable Aand ith'e' weight during the movement of the car to raise the weight with respect to the car, and means whereby movement ot the weight in its descent .etects mov-ement ot the door in either direction at the will of the operator.

19. In an elevator, the combination'ot 1a movement of the car in either direction, and

means whereby movement ofthe weight in its descent effects movement of the door in either direction at the will ot thefoperaftor.

20. In an elevator, the combinationot a car, a door, a single weight monntedimovably on thecar, n'ieans to raise the wei-eht with respect to the car includinga elaftch, means under control oit the operator to ydetermine the opening or the closing of theclntch, and means whereby the vmoveniient oiiffthe weight .in its descent eiiects r'ioven'ientcot the door in either direct-ion at 'thewilliol the operator.` Y f 21. In an elevator', the combination et a car, a door, a single weight mountcdmovably on the car, a cable fixed ,atfits-,ujpfper and lower ends at the topv and :bottom ,of the elevatorshataa clnteh'tov eiiectrengafgement between the cable and ,thel .weight to raise the weight with respect .tothe car, means under the control ot' the'operatorto determine the opening andthe closingofl the clutch, and means whereby the movcn'ient 'ot the weight'in its descent:eiects,movement of the door in either directionfat fthe will of the operator. Y

22. In ari-elevator, the cmnbination car, a door, a. single weight mounted-ir ably on the car, a cable fixed at its rappe and lower ends at .the top and 'bottom ofthe elevator shaft, a clutel'i -toeiiect lenga'gement between the cable and the weight to raise the weight with respect to' the car, a cam .to determine the opening or the closing ofthe clutch, means under the control lof the operator to shift the cam, and means whe-reby the movement of the weight in its descent effects movement of the doori-n either direction at the will of the operator.

23. In an elevator, thecombination oi? a car, a door, a single weight mounted movably on the car, means to raise'the .weight with respect to the car, means to hold the weight in elevated position with respect vto 4the car, means under control 'ot the operator to release the .weight,and menns whereby the movement oi' the weightin its Vvdescent effects movement of the door in eitherpdi'rection at the will ot the operator.

9A. In an` elevator, the combination of a car, `Va door, a single 'weightxmonnted movably on the car, means t0 raise the weight with respect to the car, a holding rod mounted on the car, a clutch to effect engagement between the weight and the holding rod to hold the weight in elevated position, means under control of the operator to determine the opening or the closing of the clutch, and means whereby the movement of the weight in its descent effects movement of the door in either direction at the will of the operator.

25. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, means to raise the weight with respect to the car, a holding rod mounted OIl the car, a clutch to effect engagement between the weight and the holding rod, a cam to determine the opening or the closing of the clutch, means under control of the operator to shift the clutch, and means whereby the movement of the weight in its descent effects movement of the door in either direction at the will of the operator.

26. In an elevator, the combination of a car, a door, a single weight mounted movably 0n the car, means to raisel the weight with respect to the car, a power transmission cable in operative connection with the door, a clutch to effectengagement between the weight and the cable, and means under control of the operator to determine tho opening or the closing of the clutch.

27. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, means to raise the weight with respect to the car, a power transmission cable in operative connection with the door, a clutch to effect engagement between the weight and the cable, a cam to determine the opening or the closing of the clutch, and means under control of the operator to shift the cam.

28. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, means to raise the weight with respect to the car, a looped cable having its ends operatively connected. to the door to move the same in opposite directions, and means to effect operative connection between the weight and either member of the looped cable.

29. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, means to raise the weight with respect to the car, a looped cable having its ends operatively connected to the door to move the same in opposite directions, clutches to effect engagement between the weight and the members of the looped cable, and means under the control of the operator to determine the opening or the closing of the clutches.

30. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, means to raise the weight with respect to the car, a looped cable having its ends operatively connected to the door to move the same in opposite directions, clutches to effect engagement between the weight and the members of the looped cable, cams in operative relation with the clutches to determine the opening or the closing thereof, and means under the control of the operator to shift the cams.

31. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, a cable fixed in the elevator shaft, a power transmitting cable operatively connected with the door, clutches mounted on the weight to effect engagement between the weight and said cables respectively, and means under control of the operator to determine the opening or the closing of said clutches.

SEQ. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, a cable fixed in the elevator shaft, a power transmitting cable operatively connected with the door, clutches mounted on the weight to effect engagement between the weight and said cables respectively, a cam shaft mounted on the weight, cams carried thereby in operative relation with the clutches respectively, and means under the control of the operator to shift the cam shaft.

33. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, a cable fixed in the elevator shaft, a power transmitting cable operatively connected with the door, clutches mounted on the weight, to effect engagement between the weight and said cables respectively, a cam shaft mounted on the weight, cams carried thereby in operative relation wit-h the clutches respectively, a vertical shaft mounted on the car, intermeshing gears on the cam shaft and the vertical shaft, the gear on the vertical shaft having a sliding engagement therewith, and means under control of the operator to oscillate the vertical shaft.

34. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, a cable fixed in the elevator shaft, a power transmission cable carried by the car and operatively connected with the door, a holding rod, clutches carried by tho weight and adapted to effect operative connection between the weight and theI fixed cable, the transmission cable and the holding rod.` and means to determine the opening or the closing of said clutches.

35. In an elevator, the combination of a car, a door, a single weight mounted movably on the car, means to raise the weight with respect to the car, means whereby the movement of the weight in its descent effects movement of the door in either direction,

door controller handle to control said last named means, a car controller lever, and means whereby movement `of the door controller handle from neutral position locks the car controller against movement.

36. In an elevator, the combination of a car, a door, a single weight mounted movablyon the car, means to raise the Weight with respect to the car, means whereby the movement of the Weight in its descent el'ects movement of the door, a car controller lever, and means whereby the operation of said last named means locks the car controller lever against movement.

37. In an elevator, the combination of a car, a car controller lever, a door, a door controlling shaft, a controller locking rod, a yoke having a pin and slot connection with the door controlling shaft, and an operative connection between said yoke and the locking rod.

38. In an elevator, the combination of a car, a car controller lever, a door, a door controlling shaft, a controller locking rod, a yoke having a pin and slot connection with the door controlling shaft, and a bell crank lever connecting the yoke and the locking rod.

39. In an elevator, the combination of a car, a car controller lever, a door, a source of power mounted on the car, a transmitting cable operatively connected with the source of power and with the door, a car controller locking rod, and means operated by the movement of the transmitting cable to shift the locking rod to prevent movement of the car controller lever.

40. In an elevator, the combination of a car, a car controller lever, a door, a source of power mounted on the car, a transmitting cable operatively connected with the source of power and With the door, a car controller locking rod, a screw shaft operated by movement of the transmitting cable, a travelling nut on said screw shaft, and means operated by said travelling nut to shift the locking rod to prevent movement of the car controlling lever.

This specification signed this 18th day of November A. D. 1921.

CHRISTIAN G. LASSEN. 

